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sloppycanada
 one year ago
Find f(g(x)) if f(x) = 2x + 1 and g(x) = x2  1.
sloppycanada
 one year ago
Find f(g(x)) if f(x) = 2x + 1 and g(x) = x2  1.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wherever you see an x in your function for f(x) replace it with the function of g(x). \[f(g(x)) = 2(x^22)+1\]

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1\[2x^23\] @Jhannybean

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1but that's not one of my choices.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What are your answer choices?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok \[f(g(x))= 2(x ^{2}1)+1\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[f(g(x))=2x ^{2}2+1\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.02(x^21)+1 = 2x^2 2 + 1 = 2x^2  1

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh, I made a typo there.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The \(x^22\) should have been \(x^21\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[f(g(x))= 2x ^{2}1\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0No harm in correcting me :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0f(g(x)) = 2(g(x)) +1 = 2(x^21)+1

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1So this one  Find g(f(x)) if f(x) = 2x  3 and g(x) = x  1.

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1Should be  \[2x^2 + x 3\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0g)x)1 = (2x3)1 = 2x4

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1Find f(g(x)) if f(x) = 2x + 1 and g(x) = x2  1. My answer options are  2x 1 \[2x^21\] \[2x^2 + 1\] \[2x^31\]

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1So if it's f(g(x)), shouldn't it be something along the lines of  (x^2  1)(2x+1)?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0We've done this one.

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1It's just 2x 1 ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You're not multiplying anything actually, you're just substituting the function of g(x).

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1Wait what? I am very confused.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[f(g(x))= f(x^21) = 2(x^21)+1 = 2x^22+1 =2x^21\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you see it now, @sloppycanada ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0which part is confusing you?

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1Where the "x" in 2x1 went.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It was replaced by g(x)

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1Okay, so in this  Find g(f(x)) if f(x) = 2x  3 and g(x) = x  1. It'd just be 1(2x 3)  1?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Not quite, \[g(f(x)) = g(2x3)= (2x3)1 = 2x4\]

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1Okay so again  Find (f – g)(x) if f(x) = 2x – 6 and g(x) = 3x + 8. (2x 6)  (3x+ 8) = x +2?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Somewhat, but a small math error. \[(fg)(x) = f(x)  g(x) = (2x6)(3x+8) = x(8+6) = x14\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You've got the idea though :D

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1Find (f + g)(x) if f(x) = 1/2x + 4 and g(x) = x  3. (1/2x +4) + (x3) = 1/2 + 1

sloppycanada
 one year ago
Best ResponseYou've already chosen the best response.1Find the zeros of 4x + 6
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